Comparison

Pocketbook Appendix Lite vs Guitar Chord Composer

Price, ratings, monetisation and update history for both apps, side by side — with what reviewers say about each.

Head to head
About

Pocketbook Appendix Lite

This app provides a comprehensive collection of Japanese reference data, including postal charges, holidays, age tables, and conversion charts. It is regularly updated with new information and bug fixes to ensure accuracy and usability.

Highlights
  • Age table
  • Conversion table
  • Postal charges
  • Emergency numbers
  • Japanese holidays
  • Calendar
  • Solar system information
Features
Read full description

Pocketbook Appendix Lite is english version of Techo-no-furoku(手帳の付録) Lite. This application is like the Japanese pocketbook appendix. It has a lot of information on Japan and more than Pocketbook Appendix. [ver1.3.8 Update] - Update "Postal Charges" data after 2025/11/1 - Update "Noshigami" - Update "Long-lived celebration" - Update "Emergency number" [ver1.3.7 Update] "Postal Charges" data after 2024/10/1 [ver1.3.6 Update] "Postal Charges" data after 2023/10/1 [ver1.3.5 Update] "Postal Charges" data after 2023/05/8 [ver1.3.3 Update] - Update "Postal Charges" data after 2019/10/1 [ver1.3.2 Update] - Update "Age table" for new Japanese Calender - Update "Japanese holiday" for 2019,2020 [ver1.3.1 Update] - Fix unit of acceleration in conversion table on Japanese version. [ver1.3.0 Update] - Add Mountain Day to Japanese Holiday. - Fix that not all of A.D. of the age table is displayed. - Fix calculation flow rate, kinematic viscosity ,absolute measurement in conversion table. - Update postal charges. - Fix that crash when selecting some items. - Fix that layout collapses when displayed on landscape screen. - Fix the app name to Pocketbook Appendix Lite. [ver1.2.0 Update] - Acceleration, flow rate, additional viscosity, kinematic viscosity to absolute measurement conversion table - If you have to bold in body configuration, Fixed a phenomenon that sum calendar display of age Chart is interrupted [Ver1.1.0 Update] - bug fixes to be killed iOS8 [Ver1.0.9 Update] Fixed a memory leak [Ver1.0.8 Update] - URL Scheme 'appendixf' - Background Color Bug Fix URLスキーム対応 "appendixf" [Ver1.0.7 Update] - iOS7 PickerView Bug Fix [Ver1.0.5 Update] - Tax Rate Change [Ver1.0.4 Update] - Bug fix in Emergency number [Ver1.0.3 Update] - Menu icon add - Bug fix [Ver1.0.2 Update] - Add to a dwarf planet in the solar system star - Bug Fix [Contents] - Age table - Conversion table - Postal charges - Emergency number - Japanese holiday - Rokuyō - Prefectures of Japan - Country number - Time difference - Writing of letter - Noshigami - Calendar (Koyomi) - Solar system - The twelve signs of the zodiac - Language of flowers - Long-lived celebration - Wedding Anniversary "Pocketbook Appendix" (paid version) contents - The symbol of an element - Size table - Web color code - Yakudoshi - Stamp duty - The 24 Solar Terms - Paper size The paid version will not see advertising.

About

Guitar Chord Composer

Instantly find, hear, and build over 370 guitar chords with multiple voicings. Explore classic progressions, compose your own songs, and utilize practice tools like a metronome and capo calculator. Includes a beginner's guide and left-handed mode.

Highlights
  • 370+ instant guitar chords
  • Tap to hear chord voicings
  • Auto-play chord progressions
  • Compose and save song progressions
  • Capo calculator
  • Metronome and strum patterns
  • Beginner's guide and practice log
Features
Read full description

Guitar Chord Book brings together everything you need to find, hear, and build guitar chords in one app. [Find 370+ chords instantly] 12 roots x 31 types fully covered — major, minor, 7th, M7, m7, 6, sus4, add9, dim, aug, and tensions like 7(9), 7(b9), 7(#9), 7(13), M7(13), m7(11) and more. Just pick a root and a type to see the fingering at once. Each chord includes multiple voicings, so you can explore other shapes up the neck. [Tap to hear it] Built-in realistic guitar samples play every time you select a chord, so you learn by ear. Compare how each voicing sounds. [Auto-play progressions] A rich library of classics — Royal Road, Canon, ii-V-I, 12-bar blues and more. Play any progression back at your own tempo with the current chord highlighted. [Compose your own songs] Line up chords, set tempo, time signature, sections and repeats, then save your own progression. Preview as you go, or start from a built-in progression and edit it. [Handy practice tools] - Capo calculator: transpose keys and find the capo position - Metronome: 40-240 BPM, multiple time signatures - Strum patterns: 8-beat, 16-beat, bossa nova, reggae, funk and more - Practice log: track daily practice time and streaks on a calendar [Beginner guide] The first 8 chords to learn, plus practice tips. [More] - Favorites for chords and progressions - Left-handed mode (mirrored diagrams) - 9 languages supported From beginner practice to advanced voicing hunts to songwriting — one book that does it all.

Screenshots

Pocketbook Appendix Lite2 screens
Guitar Chord Composer4 screens

Verdict

The call

The clearest difference is in-app purchases: Pocketbook Appendix Lite at none against Guitar Chord Composer's 1. Pocketbook Appendix Lite also leads on iOS requirement (11.0 vs 17.0). Guitar Chord Composer's advantage is ads (none vs shown) and update cadence (every 3 weeks vs every 6 months). On price and device support there is nothing between them.

Scored on Price · Rating · Positive reviews · Number of ratings · Update frequency · Ads · In-app purchases · Monetization · Best chart rank · Devices · Requires iOS

CostPrice · In-app purchases · Ads · Monetization

Both are free to download. Guitar Chord Composer sells 1 one-off in-app purchase. Pocketbook Appendix Lite asks for nothing beyond the download.

UpkeepUpdate frequency

Pocketbook Appendix Lite ships an update every 6 months, Guitar Chord Composer every 3 weeks. The most recent releases landed on November 1, 2026 and November 5, 2026 respectively.

Scorecard5 real differences · 5 level
Pocketbook Appendix Lite versus Guitar Chord Composer: the parameters behind the verdict, then further details
ParameterPocketbook Appendix LiteGuitar Chord Composer
PriceFreeFree
Rating—5.0 (1 ratings) — better
Positive reviews45.0% of reviews—
Number of ratings—1 — better
Update frequencyEvery 6 monthsEvery 3 weeks — better
AdsYesNo — better
In-app purchasesNo — betterYes
MonetizationAd-supportedFree — better
DevicesiPhone, iPodiPhone, iPad
Requires iOS11.0 — better17.0
Further details — not scored
Size7 MB16 MB
Age rating4+4+
DeveloperTECHNO SQUARE Inc.SANWA Inc.

Customer experience

Pocketbook Appendix Lite

Written reviews20 reviews
Positive45.0%
Neutral10.0%
Negative45.0%

Guitar Chord Composer

All ratings1 ratings
Positive100.0%
Neutral0.0%
Negative0.0%

In-app purchases

None

Pocketbook Appendix Lite

No in-app purchases

1 purchases

Guitar Chord Composer

One-time1
  • 作曲サポート Pro$5.99

Questions

Is Pocketbook Appendix Lite free?
Pocketbook Appendix Lite is free to download, with no in-app purchases.
Is Guitar Chord Composer free?
Guitar Chord Composer is free to download, with in-app purchases available.
Do Pocketbook Appendix Lite or Guitar Chord Composer have ads?
Pocketbook Appendix Lite shows ads; Guitar Chord Composer does not.
Which is updated more often, Pocketbook Appendix Lite or Guitar Chord Composer?
Pocketbook Appendix Lite ships an update every 6 months, and Guitar Chord Composer every 3 weeks. Most recently, Pocketbook Appendix Lite was updated on November 1, 2026 and Guitar Chord Composer on November 5, 2026.

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